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  1. A attribute in a relation is a foreign key if the _______ key from one relation is used as an attribute in that relation .
    2. A.
    Candidate
    B.
    Primary
    C.
    Super
    D.
    Sub

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    Answer : Option B

    Explanation :

    Primary

    The primary key has to be referred in the other relation to form a foreign key in that relation .

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